GF Signet 2250 Hydrostatic Level Sensor - Manual (Page 2)

2 2250 Hydrostatic Level Sensor
Installation
IMPORTANT!
A tiny capillary tube inside the sensor body is used to ensure that the back of the diaphragm remains at atmospheric pressure.
If the capillary tube is blocked or damaged, the sensor cannot operate properly.
• If moisture is allowed to propagate down this tube to the rear of the diaphragm, the sensor may be damaged.
• Do not allow the cable to be bent or compressed.
• The ceramic diaphragm in the 2250 can be permanently damaged by over-pressure conditions or by mechanical contact.
HANDLE THESE SENSORS WITH CARE.
The 2250 can be assembled as a blind 4 to 20 mA signal connected
by cable to a PLC, chart recorder or other 4 to 20 mA device.
This type of installation requires no additional hardware.
The user must provide the ¾ in. conduit to protect the cable from
damage. The 2250 cable is not suitable for direct submersion.
3-2250-2xx-x
PLC
4 to 20 mA
Direct 4 to 20 mA output
3-2250-1xx-x
3-8900
Multi-Parameter
Controller
C1 2.50 μS/cm
L2 58.43 M
Relay 1 Relay 2
ENTER
3-9900
ENTER
Digital (S 3 L)
Direct Digital output
The 2250 can be assembled as a digital sensor connected
directly to a Signet 8900 Multi-Parameter Controller or Signet
9900 Transmitter.