TESTO 445 - Page 41

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