The DPM-900 Series is a Dynamic Strain Amplifier. The carrier-wave amplifier features highly accurate, excellent stable, and easy setting.
Frequency Response DC to 10 kHz
Deviation: ?10 %
SN Ratio 48 dBp-p or more (RTI: Within 3.9 ?10-6 strain)
[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]
Excitation Voltage: 2 Vrms,
Bridge Resistance: 120 ?, LPF = FLAT
Measuring Targets Strain gage, strain-gage transducers
Channels 1
Applicable Bridge Resistance 60 to 1000 ?
Gage Factor 2.00 fixed
Bridge Excitation Voltage: 2 Vrms, 0.5 Vrms, switchable
Frequency: 28 kHz sine wave
Balance Adjustment Resistance: Within ?2% (?10k ?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)
Storage: Written into nonvolatile memory
Capacitance: CST method (Auto-tracking)
Nonlinearity Within ?0.2% FS
Output Impedance Approx. 2 ?
Calibration Strain 1 ?10-6 strain steps within ? (1 to 9999) ?10-6 strain
[Setting: CAL switch (4-digit digital switch)]
Accuracy: Within ? (0.5% + 1.0 ?10-6 strain)
Applicable scope of CAL Accuracy: ? (10 to 9999) ?10-6 strain
Sensitivity Adjustment The amplifier sensitivity is set in combined with
the CAL and VOLTAGE OUT switches (4-digit digital switch)
CAL switch range: 1 ?10-6 strain steps up to 100 to 9999 ?10-6 strain
VOLTAGE OUT switch range: 0.01 V steps up to 1.00 to 10.00 V
[Condition: When 500 ?10-6 strain is input, outputs 10.00 V
(? 20000) to 5000 ?10-6 strain is input, outputs 1.00 V (? 200)]
[Setting Example: When 500 is set to CAL, VOLTAGE OUT is 10.00 (? 20000) to 5000 is set to CAL, VOLTAGE OUT is 1.00 (? 200)]
Accuracy: Within ?0.5 %
Fine Sensitivity Adjustment Range: 1 to 1/2.5
LPF Transfer characteristic : 2nd Order Butterworth
Cutoff frequencies : 10, 30, 100, 300, 1k Hz, and FLAT, 6 steps
Amplitude Ratio : -3?1 dB, at cutoff point
Attenuation : (-12?1) dB/oct
HPF Cutoff Frequencies : 0.2 Hz and off (2 steps)
Output OUTPUT A: ?10 V (Load resistance 5 k? or more)
OUTPUT B: ?10 V (Load resistance 5 k? or more)
Stability Temperature
Zero point: ?0.2 ?10-6 strain/?C
Sensitivity: ?0.05%/?C
Time
Zero point: ?1.0 ?10-6 strain/24h
Sensitivity: ?0.3%/24h
Power supply
Zero point: ?0.05%FS/power fluctuation ?10%
Sensitivity: ?0.05%/power fluctuation ?10%
Withstand Voltage 1k VAC for 1 min between measuring bridge and case
1 k VAC for 1 min between AC power supply and case
Output Voltage Indication Output voltage display flashing(4 1/2 digit digital display only)
Over Input Indication Output voltage indication flickers(4 1/2-digit digital indication only)
Check Functions Bridge check
Sensor Connection Check Functions When the input is open, output saturates to the negative side.
Key Lock Functions Setting methods other than POWER switch become invalid
(However, the setting values of the CAL and VOLTAGE OUT switches can be changed.)
Remote Functions Capable of controlling the following functions
Balance adjustment (BAL)
Addition of the calibration signal (CAL)
Key lock
Synchronization Method Automatically determines internal (INT) or external (EXT) and manual setting
TEDS Read the TEDS information of the TEDS-compatible sensor and set the rated output to the output voltage of the VOLTAGE OUT switch
(Condition: Within the setting range of the sensitivity adjuster)
Actual Load Calibration Set the actual load to the output voltage of the VOLTAGE OUT switch
(Condition: Within the setting range of the sensitivity adjuster)
Vibration Resistance 5 to 200 Hz, 29.4 m/s2 (3G)
X, Y, and Z directions: 12 cycles with 10 minutes/cycle
Shock Resistance 15 G, 11 ms or less
X, Y, and Z directions: each 3 times
Operating Temperature 10 to 50 ?C
Operating Humidity 20 to 85 %RH (noncondensing)
Power Supply 90 to 110 VAC (Approx. 12 VA: 100 VAC)
10.5 to 15 VDC (Approx. 0.6 A: 12 VDC)
The following products are also available upon request.
DPM-913C A115: 108 to 132VAC
DPM-913C A200: 180 to 220VAC
DPM-913C A230: 207 to 253VAC
Dimensions 49 (W) ? 128.5 (H) ? 262.5 (D) mm
(Excluding protrusions)
Weight Approx. 1.2 kg
Standard Accessories Output cable U-08 (1.5 m)
Output cable U-59 (1.5 m)
AC power cable P-25 (With 2-pin conversion plug CM-52),
Fuse (Midget type 0.5, 1 A)
Instruction manual
Simple manual sticker
N/A
