Synrad Power Wizard PW-250 - Specifications

Power Wizard PW-250 Operating
Instructions (cont.)
The useful temperature range of the target is 0–150 °C (32–302 °F). Accurate measurements can be performed at any tem-
perature in between. Damage to the target and sensor can occur if the temperature of the target exceeds 180 °C (356 °F).
The PW-250 will beep continuously if the target temperature exceeds 150 °C (302 °F).
The target’s absorption is relatively constant as a function of wavelength (see Figure 1). No calibration factors are required
when using the PW-250 with CO
2
, YAG, near IR (diode), Visible or Excimer lasers because the change in target absorption
is less than 3%. When using the PW-250 with Carbon Monoxide (CO) lasers, multiply the displayed reading by a factor of
1.03 for improved accuracy.
Figure 1 Target absorption versus wavelength
Specifications
Range (3 1/2 digits) ............................... 1–250 W
Resolution .............................................. 0.1 W
Wavelength range
1
................................. 190 nm–11 µm
Individual calibrated wavelength
1
......... 10.6 µm
Target absorption
1
,
190 nm–1.1 µm, 9–11 µm ...................... 0.96–0.99
Target absorption
1
,
190 nm–11 µm ....................................... 0.93–0.99
Accuracy ................................................ ±5%
Target diameter (mm) ............................ 22
Settling time (seconds) .......................... <4
Max. allowable input power
(single application, W) .......................... 300
Max. average power density
2
(kW/cm
2
) ............................................... 20
Max. peak energy density
3
(J/cm
2
) ............ 1
Max. target temperature (°C) ................... 180
Typical target temperature rise per
measurement (°C/W) ...............................0.4
Battery life, typ ..........................................5 years /
...................................................................25,000 readings
Battery type, 3 each ..................................CR2025 Lithium
Auto shut-off time
4
(seconds) ...................25
Data hold time (seconds) ..........................15
Size (mm) .................................................. 159 × 30 × 12
Weight (g) ................................................. 80
* specifications subject to change without notice.
1 Typical absorption curve supplied with each meter.
2 Damage to coating may occur above this value.
3 For pulsed lasers and 50 µs pulse width.
4 After release of RESET/POWER button.