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Operating Ambient Environment

Process Temperature Extended Sensor -40° F to +250° F (-40°C to +121° C) steady state Process Temperature Integral Sensor -40°F to +185°F (-40° C to +85° C) steady state Ambient Temperature -40° F to +185 °F (-40° C to +85° C) electronics -4° F to +158 °F (-20 °C to +70° C) display (full visibility) -40° F to +185° F (-40° C to +85° C) display (with reduced visibility) Humidity Limits: 0 to 95 %, non condensing

Level Field Unit - 23702 Wireless Instrumentation Gauge Level Field Unit

Models WI-GL-I-xx, WI-GL-E- xx WI-GL-E-Y6-xx Sampling and Transmission Characteristics The Level Field Unit samples pressure at regular intervals. The data may then be transmitted to the Base Radio for centralized monitoring and data acquisition. The user specifies how frequently the process is monitored and how often data is transmitted.

Level – user designates low rate and high rate conditions Sampling rate – user selectable from 1 to 60 seconds (low rate) and from 1 to 30 seconds (high rate) Transmission rate – user selectable from 1 second to 60 seconds (low and high rate)

The Wireless Instrumentation Manager can be used for real-time monitoring of the process information. The user can set thresholds to represent “alarm” or abnormal conditions. Self-Diagnostics

Low battery alarm – indicates the need to replace the battery (approximately one month warning) Contains extensive self-checking software and hardware that continuously monitors the operation. Any sensor or device parameter out of spec is identified and reported

Level Field Unit Description The wireless level Field Unit is designed to measure hydrostatic level in a vented tank. The level Field Unit is available with an integrated sensor or an extended sensor. If the level measurement point is low to the ground or if the tank is surrounded by a containment dike, the sensor extension allows more advantageous positioning of the wireless transceiver without compromising the sensor measurement accuracy. Specific gravity correction and multiple level units of measure are supported. Self contained and fully wireless, the RF transceiver operates in the 902 to 928MHz ISM license-free band. Power Characteristics

Self-contained power ‘C’ Size 3.6 V lithium battery Up to twenty year battery life (depends on sample rate and RF update rate), field replaceable

Wireless Instrumentation WI-GL Product Description 08/29/07

Level Input Characteristics

Model Upper Range Limit (URL) Over- load Limit Safety Limit WI-GL-I-15 15 PSIG 30 PSI 500 PSI WI-GL-I-30 30 PSIG 60 PSI 500 PSI WI-GL-E-30 30 PSIG 60 PSI 500 PSI WI-GL-E-Y6-30 30 PSIG 60 PSI 500 PSI

Accuracy

± 0.1 % of sensor URL over temperature range -40°F to +185°F (-40°C to +85°C)

Stability

Combined zero and span stability: less than ± 0.1% of sensor URL per year at +70°F