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Model 1872:
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Applications
Applications
The Model 1872 is a highly advanced solid-state instrument that has been designed for industrial liquid level monitoring applications.
- Monitors the level, volume or temperature of one or two liquids in a tank
- Can compensate for changes in temperature, and can correct for tank shape
- Can be used as a local display unit and/or a simple process controller
- Can be connected to a serial communication network, or used in systems that require 4-20mA communication signals
- Monitors aboveground & underground storage tanks, industrial tanks, and chemical tanks
Capabilities
Capabilities
The Model 1872 was designed to replace more expensive, less accurate level montors
- Calculates liquid level by measuring the location of a magnetic float on the surface of the liquid.
- Level is determined by a sensitive magnetostrictive sensor
- Determines liquid level by timing the total propagation time from the generation ofreceiving a reflected ignal from the magnetic float
- Liquid level information available on easy-to-read LED display with a choice of three scale factors or float references
- User-programmable to use in a variety of applications and to display information in different units
- Program parameters are stored in non-volatile
memory and are not lost during power interruptions
Benefits
Benefits
- Newly developed technology provides outstanding price-to-performance ratio
- Does not require re-zeroing or periodic recalibration
- All critical parameters are user-programmable
- Automatically performs tank volume correction (from strapping table)
- Can measure the absolute or differential levels of two different immiscible liquids (e.g. water and oil)
Specs
Specifications
| GENERAL | |
|---|---|
| Input Sensor | 2 Conductor Magnetostrictive |
| Resolution | +/-0.001% of full scale |
| Accuracy | +/- 0.05% of F.S. (0.005% non repeatability) |
| Temperature Drift | +/- 0.01% per degree Celcius |
| Operating Temperature | 0° to 55° C (standard) |
| Humidity | 10% - 90% non condensing |
| Weight | 24 ounces |
| Dielectric test | 1000 V rms for 1 minute, line to any other terminal |
| Voltage | 117/234 VAC +/- 10% |
| Frequency | 47 - 63 Hz |
| Load | 8 Watts, maximum |
| Transmitter Power | Internal 26VDC supply |
| DISPLAY | |
| Type | 5-digit LED |
| Digit Height | 0.56 inch (14.2 mm) |
| Viewing distance | 23 feet |
| Decimal point | Field programmable |
| OPTIONAL ANALOG OUTPUT | |
| Outputs | +/- 1 mA, 0-1mA, 0-2mA,4-20mA,(requires external loop power) 0-10VDC or +/- 10VDC |
| Compliance | 10 Volts (0-1mA, +/- 1mA, 0-2mA) 500 Ohms (4-20mA) 10K Ohms (0-10VDC +/-10VDC) |
| Non-Linearity | +/- 0.1% of full scale |
| Resolution | 12 bits (+/- 0.025% of full scale) |
| OPTIONAL HI/LO RELAYS | |
| Contact Rating | 3A @ 125/250 VAC (resistive), 30 VDC |
Panel cut out: 1.653 (42mm) x 3.543 (90mm)
Panel thickness: 0.1 (2.7mm) to 0.19 (5.0mm)
Order
Accessories
Requires level sensor Model 1898
Ordering Information
Model 1872 - X - Y - ZZZ - I = options, see below
Options
1810-q-r-t-u = options, see below
| X = Analog output: | 0 (0-1mA) | 4 (4-20mA) | ||
| 1 (+/-1mA) | 10 (10 VDC) | |||
| 2 (0-2 mA) | 11 (+/-10VDC) | |||
| Y= Options: | B=BCD Output S=Serial Output |
E=External Relay Outputs R=Relay Limits |
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| ZZZ = | ZZZ= 120 (120 VAC) or 240 (240VAC) | |||
| I = | Optional intrinsically safe (requires I.S. barrier Model 1950) | |||
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