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Functional Specifications

Service

Accessory product for the Model 3095 MV and Model 3244MV.

Output

One, two, or three 4–20 mA output signals, user-selectable for DP, AP, GP, PT, or flow.

Power Supply

External power supply required for each channel. Channel 1 must be powered for Tri-Loop operation. Each channel operates on terminal voltage of 11–42.4 V dc.

Turn-on Time

Analog signals will be within specifications five seconds after power is applied to Tri-Loop.

Installation Locations

Approved for FM ordinary locations.
Approved for CSA ordinary locations.

Temperature Limits

Ambient: 50 to 104 °F (10 to 40 °C).
Storage: –40 to 158 °F (–40 to 70 °C).

Humidity Limits

0–95% non-condensing relative humidity.

Failure Mode Alarm

If Tri-Loop diagnostics detect a transmitter malfunction or a Tri-Loop failure, the analog signal will be driven either below 3.75 mA or above 21.75 mA to alert the user. The high or low alarm signal is selectable by the Tri-Loop Model Number.

Performance Specifications

Reference Accuracy

±0.045% of span.

Ambient Temperature Effect per 50 °F (28 °C)

±0.15% of span.

Stability

±0.1% of span for 12 months.

Analog Output Update

Tri-Loop responds to every HART burst update. (Typical transmitter burst update rate: 0.3 to 0.5 s.)

Tri-Loop Response Time (after each burst update)

Channel 1–120 ms; Channel 2–220 ms; Channel 3–320 ms.

Total Response Time

Typical response time from sensor change to transmitter to Tri-Loop analog update: 0.7 to 1.0 s.

Physical Specifications

Electrical Connections

Screw clamps. Accepts 24-12 AWG solid or stranded wire.

Dimensions

1.57 3 3.11 3 3.36 in. (40 3 79 3 85,5 mm)

DIN Rail Mounting Options

Asymmetrical 32mm G rail, symmetrical 35 3 7.5 mm top hat rail, or symmetrical 35 3 15 mm top hat rail.

Weight

0.27 lb (0,12 kg)