Wizard Menus For Special Measuring Operations; Thermal Coefficient; Wet Bulb Globe Temperature - Ahlborn ALMEMO 5690-2M Operating Instructions Manual

11.6 Wizard menus for special measuring operations

Special measuring operations, i.e. thermal coefficient or wet bulb globe temper-
ature, require a series of sensors in a particular arrangement and function chan-
nels programmed for calculating the required variables. To ensure that these
two special measuring operations can be performed quickly and easily there is
a special wizard menu for each.

11.6.1 Thermal coefficient

To determine the thermal coefficient the two
temperature sensors are connected as re-
quired (see Manual 3.2) to channels M0 and
M1 and the heat flow plate to M2. q
The temperature difference T(M1) - T(M0) is
obtained automatically on channel M9.
For this measuring operation the following pro-
gramming steps are needed :
Averaging mode of M9
Averaging mode of M2
Range of M12
Enter cycle by means of
To start meas. operation press
To stop meas. operation press

11.6.2 Wet bulb globe temperature

The stress caused in heat-exposed workplaces
can be evaluated in terms of their wet bulb
globe temperature calculated according to the
following formula :
WBGT = 0.1 DT + 0.7 HT + 0.2 GT (see Man-
ual 3.1.4)
To measure the dry temperature (DT) and the
natural humid temperature (HT) a psychrome-
ter (FN A848-WB) with turn-off motor is con-
nected to socket M0. A PT100 globe ther-
mometer is connected to socket M1. Channel
11 is programmed for WBGT; (for this device
the factor 0.2 must not be programmed).
Wizard menus for special measuring operations
/
T1−T0
CONT or CYCL
CONT or CYCL
q/dt
Cycle timer
<START>
<STOP>
Wizard menu for thermal
coefficient
Inner temp. T0:
00: 21.67°C NiCr
Outer temp. T1 :
01: 11.42°C NiCr
Difference dt:
05: 10.25°C Diff
Averaging mode:
Heat flow q
02: 103.6 ¤¥
Averaging mode:
±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±
Thermal coeff. Channel
±
12: 193. ¤mK
1 Range
Cycle timer:
START MANU
Wizard menu for wet bulb
globe temperature
WET BULB GLOBE TEMP.
±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±
ry temperature: Channel:
00: 21.67°C Ntc
Humid temp:
10: 11.42°C HT
Globe temp:
01: 19.42°C P204
±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±
Wetbulbglobe temp. Channel 11
11: 17.43 °C
1 Range
START MANU
ALMEMO ® 5690-2M
Channel: 00
Channel: 01
Channel: 05
CONT
Channel: 02
CONT
12
q/dt
00:30:00 Sn
ESC
00
Channel: 10
Channel: 01
WBGT
ESC
49