TESTO 445 Instruction Manual page 41

Humidity/temperature probes
for tough industrial applications
Pressure-tight probes for measuring remaining
moisture , e.g. in compressed air systems
Pressure-tight precision probe for measuring
remaining moisture, e.g. in compressed air systems
Flexible, humidity probe (retains shape)
for measurements in inaccessible places
Caps for all humidity probes with Ø 12 and 22 mm
Metal protection cage, material: stainless steel V4A. Quick
adjustment time, robust and temperature-proof. Application: for
velocities < 10 m/s
Wire mesh filter, material: stainless steel V4A. Quick ,
adjustment time, protects from dirt and damage.
Application: meteorology, splashwater, condensation.
Insertable filter for metal protection basket and plastic cage.
Cap with wire mesh filter
PTFE sintered filter, PTFE material. Not affected by condensation,
water-repellent, resistant to corrosive substances.
Applications: compressed air measurements, high humidity range
(long-term measurements), high velocities.
Stainless steel sintered cap, material: V2A stainless steel. Very
robust, suitable for penetration, should be cleaned with fresh air,
mechanical protection of sensor. Application: large mechanical loads,
high velocities.
Surface adapter for humidity probes Ø 12 mm, to localize damp spots
Accessories for humidity/temperature probes, 3-function probes
Connection cable for probes with plug-in head, 1.5 m long, PUR coating material
Connection cable for probes with plug-in head, 5 m long, PUR coating material
Extension cable between plug-in head cable and instrument, 5 m long, PUR coating material
Telescope for probes with plug-in head, extension length: maximum 1 m, cable: 2.5 m, PUR coating material
Control and adjustment set 11.3 % / 75.3 % for humidity probes and 3-function probe
(please order 0554.0661 adapter for 3-function probe)
Adapter for humidity adjustment in 0635.1540 3-function probe, order with adjustment set
Control and storage humidity (33 %) for humidity probe and 3-function probe
(please order 0554.0661 adapter for 3-function probe)
Measuring
range
0 to 100 %RH
-30 to +50°C t
0 to 100 %RH
-50 to +50°C t
0 to 100 %RH
-20 to +140°C (2 to 98 %RH)
* Accuracy data at rated temperature of +25 °C, temperature coefficient ± 0.03% / °C
41
Humidity probes for testo 645 / 445
System t
99
accuracy* s
-30 to +50°C t 1 to 5
pd
±0.9 to ±4°C t min
pd pd
typically
2 min
-40 to +50°C t 1 to 5
pd
±0.8 to 4°C t min
pd pd
typically
2 min
±2 %RH <30
at
±0.4°C(0 to 50°C) 2m/s
±0.5 °C
(rem. range)
Ø 21 mm
Ø 12 mm
Ø 21 mm
Ø 12 mm
Ø 21 mm
Ø 12 mm
Ø 21 mm
Ø 12 mm
Ordering data
Connection Part no.
cable
Plug-in head 0636.9840
Please order connec-
tion cable 0430.0143
Plug-in head 0636.9841
Please order connec-
tion cable 0430.0143
Plug-in head 0628.0014
Please order connec-
tion cable 0430.0143
Part no.
0554.0665
0554.0755
0554.0667
0554.0757
0554.0666
0554.0756
0554.0640
0554.0647
0628.0012
Part no.
0430.0143
0430.0145
0409.0063
0430.0144
0554.0660
0554.0661
0554.0636