DPM-900 Series

Strain Amplifier

· Built-in HPF cancels the effect of temperature drift · Digital switch makes it easily to confirm the setting values even power off. · High voltage output of ±10 V and high SN ratio · Broad frequency response DC to 10 k Hz (913C) · Input Open Detection Function (913C)

View details in the General Catalog

Features

The DPM-900 Series is a Dynamic Strain Amplifier. The carrier-wave amplifier features highly accurate, excellent stable, and easy setting.

Relative images

To Ensure Safe Usage

The bridge check function shows the error information - that indicates the wire-breaking location - on the monitor.
Note that if 2 or more wires are broken, the bridge check function shows the error information of only one wire.

DPM-900 Series

DPM-911B Frequency Response: DC to 2.5 kHz

Specifications

Carrier Wave Frequencies

5 kHz

Measuring Targets

Strain gages, strain-gage transducers

Channels

1
Simultaneous operation is available by using multiple units.

Compatible Bridge Resistance

60 to 1000 Ω

Gage Factor

2.00 fixed

Bridge Excitation

2 Vrms, 0.5 Vrms, switchable

Balance Adjustment

Resistance: Within ±2% (±10000 ×10-6 strain)
Capacity: Within 2000 pF

Balance Adjustment Method

Resistance: Auto balance
Accuracy: Within ±0.5 ×10-6 strain
(When 500 ×10-6 strain is input, outputs 10 V, excitation voltage: 2 Vrms)
Capacitance: CST method (Capacitance self-tracking)

Nonlinearity

Within ±0.1% FS

Output Impedance

Approx. 2 Ω

Calibration Strain (CAL)

±(1 to 9999 ×10-6 strain)
Setting: CAL switch (4-digital switch)
Accuracy: Within ±(0.5% +0.5 ×10-6 strain)
Applicable scope of CAL accuracy: ±(10 to 9999) ×10-6 strain

Sensitivity Adjustment

Sensitivity is set in combination with CAL and VOLTAGE OUT switches (4-digit digital switches).

CAL switch range:
100 to 9999 ×10-6 strain by 1 ×10-6 strain step
(Set with CAL switches)

VOLTAGE OUT switch range: 1.00 to 10.00 by 0.01 V step

Accuracy: Within ±0.5%
 (When Bridge Excitation is 2 Vrms)

Range: ×200 to 20000

Fine Sensitivity Adjustment

Range: 1 to 1/2.5

Frequency Response

DC to 2.5 kHz
Deviation: ±10%

LPF

Transfer characteristic : 2nd order Butterworth
Cutoff frequencies : 10, 30, 100, 300 Hz, 1k Hz, and FLAT - 6 steps
Amplitude ratio at cutoff point : -3 ±1 dB
Attenuation : -12 ±1 dB/oct.

HPF

Cutoff frequencies : 0.2 Hz, OFF- 2 steps

SN Ratio

54 dBp-p or more
RTI: Within 2 ×10-6 strainp-p, when 500 ×10-6 strain is input, outputs 10.00 V.

60 dBp-p or more
When 1000 ×10-6 strain is input, outputs 10.00 V.

[Common Condition]
 Bridge Excitation: 2 Vrms
 Bridge Resistance: 120 Ω
 LPF = FLAT

Output

OUTPUT A : ±10 V (Load resistance 5 kΩ or more)
OUTPUT B : ±10 V (Load resistance 5 kΩ or more)

Stability

Temperature
Zero point: Within ±0.1 ×10-6 strain per °C
Sensitivity: Within ±0.05%/ºC

Time
Zero point: Within ±0.5 ×10-6 strain/24 h
Sensitivity: Within ±0.3%/24 h

Power supply
Zero point: Within ±0.05% FS/power fluctuation ±10%
Sensitivity: Within ±0.05%/power fluctuation ±10%

Stability condition: When 500 ×10-6 strain is input, outputs 10.00 V.

Withstand Voltage

1000 VAC for 1 minute between measuring bridge and case
1000 VAC for 1 minute between AC power supply and case

Output Voltage Indication

4½ digit digital display (7-segment LED)
11-segment LED bar meter

Over Input Indication

Output voltage display flashing
(4½ digit digital display only)

Check Functions

Bridge check

Key Lock Functions

Locks all keys other than POWER switch.
(Allows settings on CAL and VOLTAGE OUT switches to be changed.)

Remote Functions

Capable of controlling the following functions.
 Balance adjustment execute (BAL)
 Calibration strain output execute (CAL)
 Key lock

Synchronization Method

Automatically determines internal (INT) or external (EXT) and manual setting.

TEDS

Reads the sensor TEDS information, and sets the rated output to the VOLTAGE OUT output voltage.
(Condition: Within the setting range of the sensitivity adjuster)

Actual Load Calibration

Sets actual load input to the VOLTAGE OUT output voltage.
(Condition: Within the setting range of the sensitivity adjuster)

Vibration Resistant

5 to 200 Hz, with 29.4 m/s2 (3 G)
in X, Y and Z directions for 12 cycles, 10 min/cycle

Impact Resistant

15 G, 11 ms or less,
in X, Y and Z directions, every 3 cycles

Operating Temperature

-10 to 50°C

Operating Humidity

20 to 85% (Non-condensing)

Storage Temperature

-30 to 70°C

Power Supply

90 to 110 VAC (Approx. 12 VA: 100 VAC)
10.5 to 15 VDC (Approx. 0.6 A: 12 VDC)

Following models are also available.
DPM-xxxx A115: 108 to 132 VAC
DPM-xxxx A200: 180 to 220 VAC
DPM-xxxx A230: 207 to 253 VAC
xxxx: Part of model, example; 911B

Dimensions

49 W ×128.5 H ×262.5 D mm (Excluding protrusions)
Panel-cut dimensions: 50 W ×113 H mm

Weight

Approx. 1.2 kg

Standard Accessories

Output cable U-08, U-59, 1 each
AC power cable P-25 (With 2-pin conversion plug CM-52)
Fuse (Midget type 0.5 A, 1 A)
Instruction manual
Simple manual sticker

Optional Accessories

Extension cables N-81 to N-85
Bridge boxes DB, DBB, and DBS
Housing case YC-A
Noise filter F-7B, F-BNC
Amplifier stand FA-1B
Shielded conversion cable N-117

Dimensions

DPM-900 Series

DPM-912B Frequency Response: DC to 5 kHz

Specifications

Carrier Wave Frequencies

12 kHz

Measuring Targets

Strain gages, strain-gage transducers

Channels

1
Simultaneous operation is available by using multiple units.

Compatible Bridge Resistance

60 to 1000 Ω

Gage Factor

2.00 fixed

Bridge Excitation

2 Vrms, 0.5 Vrms, switchable

Balance Adjustment

Resistance: Within ±2% (±10000 ×10-6 strain)
Capacity: Within 2000 pF

Balance Adjustment Method

Resistance: Auto balance
Accuracy: Within ±0.5 ×10-6 strain
(When 500 ×10-6 strain is input, outputs 10 V, excitation voltage: 2 Vrms)
Capacitance: CST method (Capacitance self-tracking)

Nonlinearity

Within ±0.1% FS

Output Impedance

Approx. 2 Ω

Calibration Strain (CAL)

±(1 to 9999 ×10-6 strain)
Setting: CAL switch (4-digital switch)
Accuracy: Within ±(0.5% +0.5 ×10-6 strain)
Applicable scope of CAL accuracy: ±(10 to 9999) ×10-6 strain

Sensitivity Adjustment

Sensitivity is set in combination with CAL and VOLTAGE OUT switches (4-digit digital switches).

CAL switch range:
100 to 9999 ×10-6 strain by 1 ×10-6 strain step
(Set with CAL switches)

VOLTAGE OUT switch range: 1.00 to 10.00 by 0.01 V step

Accuracy: Within ±0.5%
 (When Bridge Excitation is 2 Vrms)

Range: ×200 to 20000

Fine Sensitivity Adjustment

Range: 1 to 1/2.5

Frequency Response

DC to 5 kHz
Deviation: ±10%

LPF

Transfer characteristic : 2nd order Butterworth
Cutoff frequencies : 10, 30, 100, 300 Hz, 1k Hz, and FLAT - 6 steps
Amplitude ratio at cutoff point : -3 ±1 dB
Attenuation : -12 ±1 dB/oct.

HPF

Cutoff Frequencies : 0.2 Hz, OFF- 2 steps

SN Ratio

53 dBp-p or more
RTI: Within 2 ×10-6 strainp-p, when 500 ×10-6 strain is input, outputs 10.00 V.

58 dBp-p or more
When 1000 ×10-6 strain is input, outputs 10.00 V.

[Common Condition]
 Bridge Excitation: 2 Vrms
 Bridge Resistance: 120 Ω
 LPF = FLAT

Output

OUTPUT A: ±10 V (Load resistance 5 kΩ or more)
OUTPUT B: ±10 V (Load resistance 5 kΩ or more)

Stability

Temperature
Zero point: Within ±0.1 ×10-6 strain per °C
Sensitivity: Within ±0.05%/ºC

Time
Zero point: Within ±0.5 ×10-6 strain/24 h
Sensitivity: Within ±0.3%/24 h

Power supply
Zero point: Within ±0.05% FS/power fluctuation ±10%
Sensitivity: Within ±0.05%/power fluctuation ±10%

Stability condition: When 500 ×10-6 strain is input, outputs 10.00 V.

Withstand Voltage

1000 VAC for 1 minute between measuring bridge and case
1000 VAC for 1 minute between AC power supply and case

Output Voltage Indication

4½ digit digital display (7-segment LED)
11-segment LED bar meter

Over Input Indication

Output voltage display flashing
(4½ digit digital display only)

Check Functions

Bridge check

Key Lock Functions

Locks all keys other than POWER switch.
(Allows settings on digital CAL and VOLTAGE OUT switches to be changed.)

Remote Functions

Capable of controlling the following functions.
 Balance adjustment execute (BAL)
 Calibration strain output execute (CAL)
 Key lock

Synchronization Method

Automatically determines internal (INT) or external (EXT) and manual setting.

TEDS

Reads the sensor TEDS information, and sets the rated output to the VOLTAGE OUT output voltage.
(Condition: Within the setting range of the sensitivity adjuster)

Actual Load Calibration

Sets actual load input to the VOLTAGE OUT output voltage.
(Condition: Within the setting range of the sensitivity adjuster)

Vibration Resistant

5 to 200 Hz, with 29.4 m/s2 (3 G)
in X, Y and Z directions for 12 cycles, 10 min/cycle

Impact Resistant

15 G, 11 ms or less,
in X, Y and Z directions, every 3 cycles

Operating Temperature

-10 to 50°C

Operating Humidity

20 to 85% (Non-condensing)

Storage Temperature

-30 to 70°C

Power Supply

90 to 110 VAC (Approx. 12 VA: 100 VAC)
10.5 to 15 VDC (Approx. 0.6 A: 12 VDC)

Following models are also available.
DPM-xxxx A115: 108 to 132 VAC
DPM-xxxx A200: 180 to 220 VAC
DPM-xxxx A230: 207 to 253 VAC
xxxx: Part of model, example; 912B

Dimensions

49 W ×128.5 H ×262.5 D mm (Excluding protrusions)
Panel-cut dimensions: 50 W ×113 H mm

Weight

Approx. 1.2 kg

Standard Accessories

Output cable U-08, U-59, 1 each
AC power cable P-25 (With 2-pin conversion plug CM-52)
Fuse (Midget type 0.5 A, 1 A)
Instruction manual
Simple manual sticker

Optional Accessories

Extension cables N-81 to N-85
Bridge boxes DB, DBB, and DBS
Housing case YC-A
Noise filter F-7B, F-BNC
Amplifier stand FA-1B
Shielded conversion cable N-117

DPM-900 Series

DPM-913C Frequency Response: DC to 10 kHz

Specifications

Carrier Wave Frequencies

28 kHz

Measuring Targets

Strain gages, strain-gage transducers

Channels

1
Simultaneous operation is available by using multiple units.

Compatible Bridge Resistance

60 to 1000 Ω

Gage Factor

2.00 fixed

Bridge Excitation

2 Vrms, 0.5 Vrms, switchable

Balance Adjustment

Resistance: Within ±2% (±10000 ×10-6 strain)
Capacity: Within 2000 pF

Balance Adjustment Method

Resistance: Auto balance
Accuracy: Within ±0.5 ×10-6 strain
(When 500 ×10-6 strain is input, outputs 10 V, excitation voltage: 2 Vrms)
Capacitance: CST method (Capacitance self-tracking)

Nonlinearity

Within ±0.2% FS

Output Impedance

Approx. 2 Ω

Calibration Strain (CAL)

±(1 to 9999 ×10-6 strain)
Setting: CAL switch (4-digital switch)
Accuracy: Within ±(0.5% +1 ×10-6 strain)
Applicable scope of CAL accuracy: ±(10 to 9999) ×10-6 strain

Sensitivity Adjustment

Sensitivity is set in combination with CAL and VOLTAGE OUT switches (4-digit digital switches).

CAL switch range:
100 to 9999 ×10-6 strain by 1 ×10-6 strain step
(Set with CAL switches)

VOLTAGE OUT switch range: 1.00 to 10.00 by 0.01 V step

Accuracy: Within (±0.5% +5 mV)
 (When Bridge Excitation is 2 Vrms)

Range: ×200 to ×20000

Fine Sensitivity Adjustment

Range: 1 to 1/2.5

Frequency Response

DC to 10 kHz
Deviation: ±10%

LPF

Transfer characteristic : 2nd order Butterworth
Cutoff frequencies : 10, 30, 100, 300 Hz, 1k Hz and FLAT - 6 steps
Amplitude ratio at cutoff point : -3 ±1 dB
Attenuation : -12 ±1 dB/oct.

HPF

Cutoff Frequencies : 0.2 Hz, OFF- 2 steps

SN Ratio

48 dBp-p or more
RTI: Within 2 ×10-6 strainp-p, when 500 ×10-6 strain is input, outputs 10.00 V.

53 dBp-p or more
When 1000 ×10-6 strain is input, outputs 10.00 V.

[Common Condition]
 Bridge Excitation: 2 Vrms
 Bridge Resistance: 120 Ω
 LPF = FLAT

Output

OUTPUT A: ±10 V (Load resistance 5 kΩ or more)
OUTPUT B: ±10 V (Load resistance 5 kΩ or more)

Stability

Temperature
Zero point: Within ±0.2 ×10-6 strain per °C
Sensitivity: Within ±0.05%/ºC

Time
Zero point: Within ±1.0 ×10-6 strain/24 h
Sensitivity: Within ±0.3%/24 h

Power supply
Zero point: Within ±0.05% FS/power fluctuation ±10%
Sensitivity: Within ±0.05%/power fluctuation ±10%

Stability condition: When 500 ×10-6 strain is input, outputs 10.00 V.

Withstand Voltage

1000 VAC for 1 minute between measuring bridge and case
1000 VAC for 1 minute between AC power supply and case

Output Voltage Indication

4½ digit digital display (7-segment LED)
11-segment LED bar meter

Over Input Indication

Output voltage display flashing
(4½ digit digital display only)

Check Functions

Bridge check

Input Open Detection Function

When the input is open, output saturates to the negative side.

Key Lock Functions

Locks all keys other than POWER switch.
(Allows settings on CAL and VOLTAGE OUT switches to be changed.)

Remote Functions

Capable of controlling the following functions.
 Balance adjustment execute (BAL)
 Calibration strain output execute (CAL)
 Key lock

Synchronization Method

Automatically determines internal (INT) or external (EXT) and manual setting.

TEDS

Reads the sensor TEDS information, and sets the rated output to the VOLTAGE OUT output voltage.
(Condition: Within the setting range of the sensitivity adjuster)

Actual Load Calibration

Sets actual load input to the VOLTAGE OUT output voltage.
(Condition: Within the setting range of the sensitivity adjuster)

Vibration Resistant

5 to 200 Hz, with 29.4 m/s2 (3 G)
in X, Y and Z directions for 12 cycles, 10 min/cycle

Impact Resistant

15 G, 11 ms or less,
in X, Y and Z directions, every 3 cycles

Operating Temperature

-10 to 50ºC

Operating Humidity

20 to 85 % (Non-condensing)

Storage Temperature

-30 to 70ºC

Power Supply

90 to 110 VAC (Approx. 12 VA: 100 VAC)
10.5 to 15 VDC (Approx. 0.6 A: 12 VDC)

Following models are also available.
DPM-xxxx A115: 108 to 132 VAC
DPM-xxxx A200: 180 to 220 VAC
DPM-xxxx A230: 207 to 253 VAC
xxxx: Part of model, example; 913C

Dimensions

49 W ×128.5 H ×262.5 D mm (Excluding protrusions)
Panel-cut dimensions: 50 W ×113 H mm

Weight

Approx. 1.2 kg

Standard Accessories

Output cable U-08, U-59, 1 each
AC power cable P-25 (With 2-pin conversion plug CM-52)
Fuse (Midget type 0.5 A, 1 A)
Instruction manual
Simple manual sticker

Optional Accessories

Extension cables N-81 to N-85
Bridge boxes DB, DBB, and DBS
Housing case YC-A
Noise filter F-7B, F-BNC
Amplifier stand FA-1B
Shielded conversion cable N-117

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