The Model 1000

  • Model-1000-NS
  • Model 1500 and Model 44
  • Model-1500-Sideview
The Model 1000 Benchtop Humidity Generator operates through use of a multifunction CPU in conjunction with other peripheral cards to perform calculation and control functions.

The embedded computer control system allows the MODEL 1000 to generate known humidity levels unattended, freeing the operating technician from the task of system monitoring and adjustment.

A computer may be connected via the USB interface allowing remote setpoint control and continuous data feed.
Humidity and temperature setpoint values are input by the operator from the front panel controller or via our DFB Desktop Software while visual indications of system status are displayed in real time.

Range | RH
Range | Temp

Uncertainty | RH
Uncertainty | Temp

Uniformity | RH

Uniformity | Temp

Stability | RH
Stability | Temp
7 – 95% RH
10°C – 55°C

± 1.0% RH
± 0.2°C

±.3% @ 7%-50%
±.4% @ 50%-90%
±.5% @ 90%-95%
±.2°C @ 50% RH

±0.3% RH

Specifications Sheet

Software Manual

User Manual

Full Specifications





± 0.2°C or better

10-80%RH ± 1.0% RH or better 6

80-95%RH ± 1.25%RH or better






±0.3%RH or better
±0.2°C @ 50%RH
±0.3%RH @ 10% to 50%RH
±0.4%RH @ 50% to 90%RH
±0.5%RH @ 90% to 95%RH
Humidity @23°C
Humidity @30°C
Humidity @35°C
Humidity @40°C
Humidity @50°C
10-55°C 2

10% to 95% RH 7

10% to 90% RH 7

10% to 85% RH 7

10% to 80% RH 7

10% to 70% RH 7
-25°C to 45°C 8
RH and Temp
±0.5%RH and ±0.1°C 5
-40°C to 60°C
0% to 100%

2-pressure method/reference compare 3

Traceable to NIST
1.5°C / Minute (Typical)
5°C / Minute (Typical)
USB (USB to USB cable included)
Customized PID Controller, Front Panel
Interface and LCD display

User friendly software included, free of charge. Upgrades include database management, and customer probe history logs for future reference.

Universal 110/220VAC, 50/60 Hz

Weight 18.5 lbs (8.4kg)
Weight 22.5 lbs (10.2kg) (shipping)





30 cm x 46 cm x 16 cm

(D) x (W) x (H)

12 in x 18 in x 6 in

(D) x (W) x (H)

-25°C to 45°C 8

190mm (depth) x 195mm (width) x 75mm (height)

Port sizes 12.5mm, 19mm and 25mm

Port sizes from 6mm to 32mm

12V DC @ 1A (Power Supply for Calibrating Probes)

1 Typical performance specification for the system’s internal chamber.
2 Specified low temp is 5°C, but typically temp is 15°C below ambient. For high accuracy, insulated door is recommended.
3 Adjustment of system using standard calibrated by 2-pressure readings
4 After chamber reaches and maintains temperature equilibrium.
5 Laboratory certificates of Thunder Scientific control probe calibration (Accredited NVLAP 200582-0) provided with system.
6 This accuracy stated represents a worst case scenario. Typically the accuracy is ±0.6% or better.
7 To achieve low RH values, dessicant must be 50% unused or better. To achieve high humidity values, system must be warmed up.
8 System software calculates dew point in real time to prevent condensation.