Liquid Controls Sponsler T675 - Cryogenic System Register - Manual (Page 41)

Sponsler, Inc. Model T675 Flow Totalizer Technical Information Pg. 38
5. TECHNICAL INFORMATION
5.1 SPECIFICATIONS:
5.1.1 HARDWARE:
INPUT AMPLIFIER:
Frequency range: 0 Hz to 2,500 Hz
Sensitivity 15millivolts RMS @ 10 Hz (min)
100millivolts RMS @ 500 Hz (min)
400millivolts RMS @ 2,500 Hz (min)
Impedance Approximately 10 k
Ω
Noise immunity High frequency roll-off, fco @ 2,500 Hz
P/U coil failure detection Internal circuit provides 500 µA excitation to read coil resistance, 3250
Ω full scale
SENSOR INPUTS: One RTD and one 4-2 0mA current loop or two 4-20 mA current loops
RTD Sensor Platinum RTD temperature probe, 1000
Ω, 2 wire
8/0.8 mA constant current sensor excitation, 200/2000
Ω full scale, ratio-metric &
chopper stabilized to eliminate drift
Current Loop Sensor Two independent current limited channels
Loop excitation boosted to 16-17 v regardless of power supply
Power Sensors Constant monitoring of main input power, backup battery and loop voltage
OUTPUTS:
Pump Control
Alarm
Communications
One general purpose Form-C 2A relay
One general purpose Form-C 2A relay
One Infrared port, Optional: one RS232 or one Bluetooth
LED INDICATORS: Front panel Power, Signal and Alarm
KEYPAD: 16 button keypad, 4 “softkeys”, ON/OFF button
Sealed, oil resistant, tactile feedback, 1M + operations (mcbf)
DISPLAY: 240x128 full graphic, CCFL backlight sunlight viewable
Automatic LCD bias control, Self-regulating non-sweating temperature activated
heater that is operational whenever power is available (even when totalizer is OFF)
Max warm-up time 0sec @0 °C. (heater not previously running)
Max warm-up time 20sec @-20 °C. (heater not previously running)
POWER:
External
9 to 26 VDC, polarity insensitive
5W LCD heater OFF, 18 W max with LCD heater ON (.21a /.75a@24v)
Built in transient protection with internal self-resetting fuse
Internal Rechargeable Lithium power pack, capable of repeatedly operating system for 10
sec with loss of main power. Typical service life: 2-4 years
ENVIRONMENTAL: Operating temperature –40 °C to +50 °C
Relative humidity 5 - 95% (non-condensing)
Sealed enclosure. Shock test vibration rated to 2 G's
PHYS.I.CAL: Size: 9.75"L x 7.50"H x 3.75"W
Weight:3.5 lbs