Showcase humidity and temperature sensor HYGRASGARD® VFF / VFTF

Measured variables

output

Sensor Tolerance Humidity

Display

Product group: WG02

Showcase humidity and temperature sensor HYGRASGARD® VFF / VFTF

The calibratable HYGRASGARD® VFF / VFTF humidity and temperature transmitter measures the relative humidity and temperature of air. It converts the measurands of humidity and temperature into a standard signal of 0-10 V or 4...20 mA, and is available with/without an optional display. The sensor device supports four switchable temperature ranges. Relative humidity (in % r.H.) is the quotient of water vapour partial pressure divided by the saturation vapour pressure at the respective gas temperature.

The measuring transducer provides precise detection of temperature and humidity. A digital, long-term stable sensor is used as a measuring element for humidity and temperature. The sensor is factory-calibrated and can be fine-tuned to ambient conditions by an expert.

The showcase sensor device is used in non-aggressive, dust-free environments and is specifically designed for installation in ceilings and walls as well as inside showcases or display cabinets in museums, galleries, cinemas, auditoriums or laboratories. The measuring element is contained inside a stainless steel probe, and its low height (approx. 2.5 mm) makes it barely noticeable.

Available configurations

Artikelnummer	Bezeichung
1201-6121-0000-100	HYGRASGARD® VFF-U
1201-6121-0200-100	HYGRASGARD® VFF-U LCD
1201-6121-1000-100	HYGRASGARD® VFTF-U
1201-6121-1200-100	HYGRASGARD® VFTF-U LCD
1201-6122-0000-100	HYGRASGARD® VFF-I
1201-6122-0200-100	HYGRASGARD® VFF-I LCD
1201-6122-1000-100	HYGRASGARD® VFTF-I
1201-6122-1200-100	HYGRASGARD® VFTF-I LCD

Measuring range, humidity

0...100 % RH

Operating range, humidity

0...95 % RH (without dew formation)

Deviation of humidity

typical ± 2.0 % (20…80 % RH); at + 25 °C, otherwise ± 3.0 %

Sensor protection

probe made of stainless steel, V4A (1.4571), pluggable;
sensor head Ø = 17 mm, H = approx. 2.5 mm;
protective sleeve Ø = 10 mm, NL = approx. 25 mm, M10 x 1.0;
with plastic plug connector Ø = approx. 11 mm,
NL = approx. 25 mm,

Current consumption

max. 10 mA at 24 V DC

Ambient temperature

storage –5...+60 °C
operation –5...+60 °C

Connection cable

PVC, LiYY, 4 x 0.14 mm²,
KL = approx. 2 m

Electrical connection

2-, 3- or 4-wire connection
0.14 -1.5 mm ² via terminal screws on circuit board

Cable connection

cable gland, plastic (M 16 x 1.5; with strain relief, exchangeable, max. inner diameter 10.4 mm) or
M12 connector according to DIN EN 61076-2-101 (optional on request)

Cable gland

M 16 x 1.5, including strain relief, exchangeable,
max. inner diameter 10.4 mm

sensor cable

PVC, LiYY, 4 x 0.14 mm²,
KL = approx. 2 m

Long-term stability

± 1 % per year

Mounting (sensor)

cut-out Ø = 11 - 15 mm, IL = approx. 50 mm,
lock nut for fixing is included in the scope of delivery.

Protection class

III (according to EN 60 730)

Protection type

IP 65 (according to EN 60 529) Housing tested,
TÜV SÜD, Report No.713139052 (Tyr 1)