GREYSTONE HAS AN ISO 9001 REGISTERED QUALITY SYSTEM

FLEX-DUCT AVERAGE TEMPERATURE TRANSMITTER

TXDF SERIES

PRODUCT DESCRIPTION

The flexible, multi-point duct averaging mounted

temperature transmitter is available with a

selection of platinum RTD sensors and a transmitter

that provides a high accuracy signal with excellent

long term stability, low hysteresis and fast response.

They are available with various scaled ranges. The

sensing cable is constructed to provide excellent

heat transfer, fast response time, and is available in

several lengths and quantity of sensing elements.

TYPICAL INSTALLATION

For complete installation and wiring details,

please refer to the product installation

instructions.

The flex-duct average probes are installed through

a hole in the side of the duct to monitor an average

temperature within the duct. Select a probe length

that allows for criss-crossing the duct multiple

times. Install the probes in a straight section of

duct at a suitable distance downstream from any

heating, cooling, or humidification devices. The

cable probe needs to be fastened onto hangers

using tube clamps or wire ties and should be

secured every 100 cm or 3’ maximum to prevent

movement of the wire and prevent wear. If

sensor is to be used in high velocity or vibration

environment use of rigid style duct probe is

recommended.

The enclosure provides mounting tabs for ease of

installation.

NOTE: This product is factory calibrated and any field adjustment will void the warranty.

SENSOR TYPE

1000 Ω platinum RTD

SENSOR ACCURACY

±0.3°C (±0.54°F) @ 0°C (32°F)

PROBE SENSING RANGE

-20 to 60°C (-4 to 140°F)

WIRE MATERIAL

FT-6 rated plenum cable, 22 AWG

STANDARD LENGTHS

1800, 3600, 6100, 7300 mm

(6’, 12’, 20’ 24’)

OUTPUT SIGNAL

4-20 mA current loop, 0-5 Vdc, or 0-10 Vdc (factory configured)

TRANSMITTER ACCURACY

±0.1% of span, including linearity

OUTPUT DRIVE @ 24 VDC

Current: 600 mA maximum

Voltage: 10 KΩ minimum

POWER SUPPLY

0-5 Vdc: 10-35 Vdc or 10-28 Vac

0-10 Vdc: 15-35 Vdc or 15-28 Vac

4-20 mA: 15-35 Vdc (loop-powered) or 22-28 Vac

CURRENT CONSUMPTION

Current: 20 mA

Voltage: 5 mA

MAXIMUM CURRENT (VOLTAGE)

5 mA nominal

MAXIMUM OUTPUT (VOLTAGE)

Limited to <5.5 Vdc or 0-5 Vdc, <10.5 for 0-10 Vdc

INPUT VOLTAGE EFFECT

Negligible over specified operating range

PROTECTION CIRCUITRY

Reverse voltage protected and output limited

AMBIENT OPERATING RANGE

-40 to 50°C (-40 to 122°F), 5 to 95 %RH non-condensing

ENCLOSURE

A: ABS, UL94-V0, IP65 (NEMA 4X)

E: Same as A, with thread adapter (1/2” NPT to M16), and cable gland fitting

TERMINATION

Screw terminal block (14 to 22 AWG)

APPROVALS

CE

COUNTRY OF ORIGIN

Canada

SPECIFICATIONS

82.5 mm

3.25"

69.8 mm

2.75"

52.0 mm

2.05"

76.2 mm

3.00"

0.5” NPT

Foam Gasket

304 Series S/S Probe

Various Probe Lengths

See Ordering Chart

FT-6 Plenum Rated Cable

CABLE GLAND FITTING

THREAD ADAPTER 1/2” NPT TO M16

ACCESSORIES - INCLUDED WITH E ENCLOSURE OPTION