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HYGRASGARD® KFTF - Modbus - T3（LCD）

Calibratable duct humidity and temperature sensor HYGRASGARD® KFTF - Modbus - T3 (± 2.0%) or KFTF - 20 - Modbus - T3 (± 1.8%), with Modbus connection, in an impact-resistant plastic housing with quick-locking screws, optionally with/ without display, with a plastic sinter filter (exchangeable), incl. mounting flange, to exactly detect the relative humidity (0…100% RH) and the temperature (–35...+80 °C) and to detect various parameters in humidity measurement. International system of units SI (default) can be switched to Imperial (via Modbus).

The duct sensor is applied in a non-aggressive, dust-free environment and is suitable for installation in ceilings, ducts and devices. It is used in the refrigeration, air conditioning and clean room technology, engineering rooms, hotels and conference facilities.

A long-term stable, digital humidity and temperature sensor guarantee exact measurement results. These measurands are used to internally calculate the following parameters that can be retrieved via Modbus: relative humidity, absolute humidity, mixture ratio, dew point, enthalpy (ignoring atmospheric air pressure) and ambient temperature.

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Tolerance Humidity

1.8%
2%

Display

产品编号 1201-32C6

TECHNICAL DETAILS
DOWNLOADS

Voltage supply

24 V AC (± 20 %) and
15…36 V DC

Power consumption

< 1.2 W/ 24 V DC; < 1.8 VA/ 24 V AC

Data points

Temperature [°C], relative humidity [% r. h.],
dew point [°C], absolute humidity [g/ m3],
mixture ratio [g/ kg], enthalpy [kJ/ kg]

Temperature deviation

typically ± 0.2 K at +25 °C

Sensor

digital humidity sensor
with integrated temperature sensor,
low hysteresis, high long-term stability

Sensor protection

plastic sinter filter, Ø 16 mm, L = 35 mm, exchangeable
(optional metal sinter filter, Ø 16 mm, L = 32 mm)

Measuring range

0...100 % RH (humidity)
– 35...+80 °C (temperature)

Zero point offset

± 10 % r.H. (humidity)
± 5 °C (temperature)

Ambient temperature

–30...+70 °C

Medium

clean air and
non-aggressive, non-combustible gases

Bus protocol

Modbus (RTU mode),
address range 0...247 selectable

Signal filtering

4 s / 32 s

Process connection

by mounting flange, plastic
(included in the scope of delivery)

Protective tube

PLEUROFORM, material polyamide (PA6), with torsion protection,
Ø 20 mm, NL = 235 mm (optionally 100 mm), vmax = 30 m/s (air)
(option on request in stainless steel V2A (1.4301), Ø 16mm)

Electrical connection

0.2 - 1.5 mm², via push-in terminal

Cable connection

cable gland, plastic
(2x M 20 x 1.5; with strain relief, exchangeable,
inner diameter 8 - 13 mm) or
M12 connector according to DIN EN 61076-2-101
(optional on request)

Cable gland

2x M 20 x 1.5; with strain relief, exchangeable,
inner diameter 8 - 13 mm

Long-term stability

± 1 % per year

Permissible air humidity

< 95 % RH, non-precipitating air

Protection class

III (according to EN 60 730)

Protection type

IP 65 (according to EN 60 529)*

Standards

CE conformity,
electromagnetic compatibility according to EN 61326,
according to EMC Directive 2014/ 30/ EU