Calibratable mean value temperature measuring transducer
THERMASGARD
®
MWTM
(rod sensor) with eight switchable measuring ranges,
continuous output, fully active flexible sensor rod for mean value measurement, plastic-coated copper protective tube (sturdy version), terminal box
enclosure made of impact-resistant plastic and enclosure cover with quick-locking screws. This sensor is used for the detection of average tempera-
tures (mean values) in gaseous media, e.g. in ventilation and air conditioning ducts over the entire cross section, or over a defined length. Laid along
a meandering route, it uniformly detects the surrounding temperature as a duct sensor. The mean value sensors are factory-calibrated.
Adjustment ⁄ fine adjustment by the user is possible (range and zero point are adjustable). The mean value sensor MWTM is available in lengths of
0.4...20 m and is delivered as standard with a mounting flange. Mounting clamps MK-05-M are available as optional accessories.
TECHNICAL DATA
Power supply:
24 V AC ⁄ DC (± 10 %) for U variant
15...36 V DC for I variant, depending on working resistance, residual ripple stabilised ± 0.3 V
Working resistance:
R
a
(ohm) = (U
b
-14 V) ⁄ 0.02 A for I variant
Load resistance:
R
L
> 5 kOhm for U variant
Power consumption:
< 1.0 VA ⁄ 24 V DC; < 2.2 VA ⁄ 24 V AC
Sensor:
Pt1000, DIN EN 60751, class B
Measuring ranges:
multi-range switching with 8 switchable measuring ranges,
see table (other ranges optional)
T
min
–30 °C, T
max
+80 °C
with manual zero point correction (± 10 K)
Output:
0 - 10 V or 4...20 mA
Ambient temperature:
measuring transducer –30...+70 °C
Connection type:
2- or 3-wire connection
Sleeve:
stainless steel
V4A
(1.4571)
Rod material:
copper sensor tube, plastic-coated
with spring for buckling protection
Sensor and rod dimensions:
Ø = 5 mm, nominal length NL = 0.4 m ⁄ 3 m ⁄ 6 m
(NL optional up to 20 m)
Active length:
active along the entire sensor length
Enclosure:
plastic, UV-stabilised, material polyamide,
30 % glass-globe reinforced, with quick-locking screws
(slotted ⁄ Phillips head combination),
colour traffic white (similar to RAL 9016),
enclosure cover for display is transparent!
Enclosure dimensions:
72 x 64 x 37.8 mm (Tyr 1 without display)
72 x 64 x 43.3 mm (Tyr 1 with display)
Cable gland:
M 16 x 1.5 , including strain relief,
exchangeable, max. inner diameter 10.4 mm
Electrical connection:
0.14 - 1.5 mm²
via terminal screws on circuit board
Installation:
observe minimum bending radius of 35 mm and
permissible vibration load ≤ ½ g
Process connection:
by mounting flange, plastic
(galvanised steel optional, see accessories)
and mounting clamps
MK - 05- M
Humidity:
< 95 % r. H., 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
Optional: Two-line
display with illumination,
cutout approx. 36 x15 mm (W x H), for displaying the
ACTUAL temperature
and the
internal diagnostics
(measuring range exceeded, measuring range not
reached, sensor breakage, sensor short circuit)
G
THERMASGARD
®
MWTM
Rev. 2018 - V15
THERMASGARD
®
MWTM
– Mean value ⁄ rod ⁄ duct temperature measuring transducer
Type ⁄ WG01
Sensor
Output
Rod Length
Item No.
MWTM - I
IP 65, I - Variante
M W T M -I 0,4 M
Pt1000
4...20 mA
0.4 m
1101-3132-0089-900
M W T M -I 3M
Pt1000
4...20 mA
3.0 m
1101-3132-0239-900
M W T M -I 6M
Pt1000
4...20 mA
6.0 m
1101-3132-0269-900
MWTM - U
IP 65, U - Variante
M W T M -U 0,4 M
Pt1000
0 - 10 V
0.4 m
1101-3131-0089-900
M W T M -U 3M
Pt1000
0 - 10 V
3.0 m
1101-3131-0239-900
M W T M -U 6M
Pt1000
0 - 10 V
6.0 m
1101-3131-0269-900
Extra charge:
Other ranges optional Two-line
display
with illumination Per meter sensor cable (from 6 m to max. 20 m)
Display and internal diagnostics
Measuring range
exceeded
Standard
Measuring range
not reached
Sensor
breakage
Sensor
short circuit
