DPM-950 Series
Strain Amplifier
Summary
· Robust against inverter noise.
· 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
Features
The DPM-950 Series is a Dynamic Strain Amplifier. The carrier-wave amplifier features strong against invert noise.
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Products table
All display
DPM-951A
Frequency Response: DC to 2 kHz (Deviation ±10%)
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) Capacitance: 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 (CAL) (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 kHz Deviation: ±10% |
| LPF | Transfer characteristic : 2nd order Butterworth Cutoff frequencies : 10, 30, 100, 300, 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: ±0.1 ×10-6 strain per °C Sensitivity: ±0.05%/ºC Time Zero point: ±0.5 ×10-6 strain/24 h Sensitivity: ±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 min between measuring bridge and case 1000 VAC for 1 min 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 Function | 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; 951A |
| 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 |
Dimensions
DPM-952A
Frequency Response: DC to 5 kHz (Deviation ±10%)
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) Capacitance: 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 (CAL) (Set with CAL switches) VOLTAGE OUT switch range: 1.00 to 10.00 V 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, 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 | 47 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: ±0.1 ×10-6 strain per °C Sensitivity: ±0.05%/ºC Time Zero point: ±0.5 ×10-6 strain/24 h Sensitivity: ±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 min between measuring bridge and case 1000 VAC for 1 min 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 Function | 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 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; 952A |
| 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 |
Housing Cases
YC-3A
Portable Housing Case (3 housing units)
| Model | YC-3A YC-3A-AC/DC |
|---|---|
| Object Product Model | DPM-900 series CDV-900A CDA-900A VAQ-700A DA-710A |
| Housing Units | 3 |
| Power Supply | 100 VAC (YC-3A) 100 VAC or 12 VDC (YC-3A-AC/DC) |
| Standard Accessories | AC power cable P-17 (With 2-pin conversion plug CM-52) Instruction manual |
| Optional Accessories | Dummy panel for 1 channel: YB-DUMMY Handle for YC-A: YC-HANDLE |
Dimensions
YC-4A
Portable Housing Case (4 housing units)
| Model | YC-4A YC-4A-AC/DC |
|---|---|
| Object Product Model | DPM-900 series CDV-900A CDA-900A VAQ-700A DA-710A |
| Housing Units | 4 |
| Power Supply | 100 VAC (YC-4A) 100 VAC or 12 VDC (YC-4A-AC/DC) |
| Standard Accessories | AC power cable P-17 (With 2-pin conversion plug CM-52) Instruction manual |
| Optional Accessories | Dummy panel for 1 channel: YB-DUMMY Handle for YC-A: YC-HANDLE |
YC-6A
Portable Housing Case (6 housing units)
| Model | YC-6A YC-6A-AC/DC |
|---|---|
| Object Product Model | DPM-900 series CDV-900A CDA-900A VAQ-700A DA-710A |
| Housing Units | 6 |
| Power Supply | 100 VAC (YC-6A) 100 VAC or 12 VDC (YC-6A-AC/DC) |
| Standard Accessories | AC power cable P-17 (With 2-pin conversion plug CM-52) Instruction manual |
| Optional Accessories | Dummy panel for 1 channel: YB-DUMMY Handle for YC-A: YC-HANDLE |
YC-8A
Portable Housing Case (8 housing units)
| Model | YC-8A YC-8A-AC/DC |
|---|---|
| Object Product Model | DPM-900 series CDV-900A CDA-900A VAQ-700A DA-710A |
| Housing Units | 8 |
| Power Supply | 100 VAC (YC-8A) 100 VAC or 12 VDC (YC-8A-AC/DC) |
| Standard Accessories | AC power cable P-17 (With 2-pin conversion plug CM-52) Instruction manual |
| Optional Accessories | Dummy panel for 1 channel: YB-DUMMY Handle for YC-A: YC-HANDLE |
Dimensions
Noise Filters
F-7B
Noise Filter
| Object Product Model | For input of all DPM series models |
|---|
F-BNC
Noise Filter
| Object Product Model | For output of all DPM series models |
|---|
FA-1B
Amplifier Stand
| Object Product Model | DPM-900 series DA-710A CDV-900A CDA-900A VAQ-700A |
|---|
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.
