GREYSTONE HAS AN ISO 9001 REGISTERED QUALITY SYSTEM

FLYING LEAD NETWORK TEMPERATURE SENSOR

TNFL SERIES

PRODUCT DESCRIPTION

The single point flying lead network temperature

sensor incorporates a precision sensor

encapsulated in a 6 mm (0.236”) OD X 50 mm (2”),

304 series stainless steel probe. Standard wire

length is 1.83 m (6’). All probes are constructed

to provide excellent heat transfer, fast response

and are potted to resist moisture penetration. The

transmitter provides a BACnet® or Modbus signal

for network connection. A compact ABS enclosure

with a hinged and gasketed cover is provided for

ease of installation.

TYPICAL INSTALLATION

For complete installation and wiring details,

please refer to the product installation

instructions.

A typical application for the flying lead type probes

is to monitor a single point temperature within

the duct. Install the probe in a straight section of

duct at a suitable distance downstream from any

heating, cooling, or humidification devices. Drill

a 3/8” hole in the top of the duct and hang the

sensor in the air-stream.

The enclosure provides mounting holes for ease of

installation

CABLE GLAND FITTING

THREAD ADAPTER 1/2” NPT TO M16

ACCESSORIES - INCLUDED WITH E ENCLOSURE OPTION

POWER SUPPLY

BACnet®: 24 Vac/dc ±10% (non-isolated half-wave rectified)

Modbus: 24 Vac/dc ±20% (non-isolated half-wave rectified)

CONSUMPTION

BACnet®: 25 mA max @ 24 Vdc

Modbus: 10 mA max @ 24 Vdc

OPERATING ENVIRONMENT

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

PROBE MATERIAL

304 series stainless steel

PROBE SIZE

6 mm (0.236”) OD x 50mm (2”) L

WIRE LENGTH

3.05m (10’)

WIRE MATERIAL

FT-6 rated plenum cable (22 AW)

WIRING CONNECTIONS

Screw terminal block (14 to 22 AWG)

ENCLOSURE

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

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

COUNTRY OF ORIGIN

Canada

TEMPERATURE

Sensing Element: NTC thermistor

Accuracy: ±0.2°C (±0.36°F) @ 0 to 70°C (32 to 158°F)

Probe Sensing Range: -40 to 60°C (-40 to 140°F)

Resolution: 0.1°C/°F

BACnet® COMMUNICATIONS INTERFACE

Hardware: 2 wire RS-485

Software: Native BACnet® MS/TP protocol

Baud Rate: 9600, 19200, 38400, 57600, 76800, or 115200 (auto-detect)

Network Address Range: Locally set to 0-127

Serial Configuration: 8N1

MODBUS COMMUNICATIONS INTERFACE Hardware: 2 wire RS-485

Software: Native Modbus MS/TP protocol (RTU)

Baud Rate: 9600, 19200, 38400, 57600, 76800, or 115200 (auto-detect)

Network Address Range: Locally set to 1-255 (switch selectable)

Parity: None

Stop Bits: 1

Error Checking: A001 (CRC-16 reverse)

INPUT VOLTAGE EFFECT

Negligible over specified operating range

PROTECTION CIRCUITRY

Reverse voltage protected and transient protected

SPECIFICATIONS

82.5 mm

3.25"

69.8 mm

2.75"

1/2” NPT

76.2 mm

3.00"

52.0 mm

2.05"

1.83 m

6.00’

6.0 mm

0.236"

50 mm

2”

FT-6 Rated Plenum Cable, 22 AWG

304 Series S/S Probe