Transducer Techniques DPM-3 User Manual

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21. METER CALIBRATION
All analog input and analog output ranges of the meter have been digitally calibrated at the
factory prior to shipment using calibration equipment certified to NIST standards. Calibration
constants are stored digitally in non-volatile memory in EEPROM on the signal conditioner
board and analog output board. As a result, these boards may be mixed and interchanged
without requiring meter recalibration. Digital calibration eliminates much of circuitry that would
be associated with analog calibration, providing superior long term accuracy and stability.
Annual meter recalibration by the factory is recommended. Please contact Transducer
Techniques for an RMA number.
22. SPECIFICATIONS
Display
Type .................................... 5 LED, 7-segment, 14.2mm (.56") high digits & 3 LED indicators
Color .................................................................................................................................. Red
Range .......................................................................................................... -99999 to +99999
TEDS Status Indicator .................................................................................. Yellow LED lamp
TEDS Status................................................. With a TEDS transducer, lamp lights with TEDS
enabled and in Plug and Play mode
A-TO-D Conversion
Read Rate ............................................................... 60/s for 60 Hz NMR, 50/s for 50 Hz NMR
Output Update Rate ..................................................................... 56/s at 60 Hz, 47/s at 50 Hz
Display Update Rate .....................................................................3.5/s at 60 Hz, 3/s at 50 Hz
Noise Rejection
CMV from DC to 60 Hz ................................................................................ Withstand 250Vac
Dielectric strength ....................................................... 3.5 kV ac for 5 sec, 2.3 kV ac for 1 min
CMR from DC to 60 Hz ................................................................................................ 130 dB
NMR at 50/60 Hz ............................................................... 90 dB with minimum digital filtering
Control Inputs (CMOS/TTL levels, logic 0 = tied to digital ground, logic 1 = open)
/ Hold input .......................................................................... Logic 0 holds display and outputs
/ Peak or Valley input ......................................................... Logic 0 displays peak/valley value
/ Tare input ......................................................................... Logic 0 offsets input value to zero
/ Tare Reset ......................................................................... Logic 0 resets Tare value to zero
/ Reset input ........................................................................ Logic 0 resets all meter functions
/ Function Reset input ................................................. Logic 0 resets peak values and alarms
/ Decimal Point input ..................... Overrides internal DP selections and controls DP position
/ Display Blank input .....................................................................Logic 0 shuts off the display

Transducer Techniques DPM-3 Specifications

General

Brand	Transducer Techniques
Model	DPM-3
Category	Measuring Instruments
Language	English