Condition: Used

The Narda RadMan 2250/06 ESM-20 is a used personal electromagnetic radiation monitor in good condition, supplied with accessories as pictured. Calibrated to the ICNIRP 1998 occupational standard, it provides reliable EMF protection for RF workers in broadcasting, telecommunications, and radar environments.

Included accessories (as described):
• Accessories as pictured

The Narda Safety Test Solutions ESM-20 RadMan (part number 2250/06) is a body-worn personal RF radiation monitor designed to protect workers in environments where elevated levels of electromagnetic radiation are present — including broadcasting towers, mobile telecommunications infrastructure, and radar installations.

The 2250/06 variant is calibrated to the ICNIRP 1998 occupational (Controlled/RF Worker) standard. It features simultaneous E-field and H-field monitoring using isotropic sensors, ensuring reliable warnings regardless of the distance or orientation relative to the radiation source. The shaped frequency response of the sensors is matched to the relevant safety standard, so no manual frequency adjustment is required.

The instrument is worn on the body using an integrated holster or belt clip. A removable yellow absorber cap minimises body-reflection effects during body-worn use; removing the cap enables use as a rapid tester or waveguide leak locator with isotropic directional response.

Key Features:
- Body-worn personal RF radiation monitor for occupational EMF safety
- Simultaneous E-field and H-field isotropic sensing
- Shaped frequency response automatically matched to ICNIRP 1998 occupational standard
- Four LED indicators display flux density at 12.5%, 25%, 50%, and 100% of the standard limit
- Audible warning buzzer triggers at 50% of the maximum permitted exposure level
- Earphone socket for use in noisy environments
- Detachable yellow RF absorber cap for isotropic leak detection
- Can be used as a body-worn warning unit, a rapid area tester, or a waveguide leak locator
- Battery powered (2 x AAA alkaline) with approximately 200 hours typical operating life (LEDs and alarm off)
- Automatic self-test on switch-on

Specifications (ESM-20 RadMan, ICNIRP 1998 Occupational — 2250/06):
Standard / Guidance: ICNIRP 1998, Occupational
E-field Frequency Range: 1 MHz to 40 GHz
H-field Frequency Range: 27 MHz to 1 GHz
Frequency Response Type: Shaped (matched to standard)
LED Indicators: 12.5%, 25%, 50%, 100% of standard limit
Alarm Threshold (1st): 50% of maximum permitted flux density
Alarm Level (CW): +20 dB above standard (not exceeding 10 kV/m or 26.5 A/m)
Peak Damage Level: +40 dB above standard for pulse widths <10 µs (not exceeding 100 kV/m or 265 A/m)
RMS Error: ±0.2 dB
Signal Integration Time: 1 second
Sensor Type: Diode-based, isotropic
Power Supply: 2 × AAA alkaline cells
Typical Battery Life: ~200 hours (LEDs and alarm off)
Operating Temperature: -10 °C to +55 °C
Storage Temperature: -40 °C to +70 °C
Data Recorder: Not included (ESM-30 / RadMan XT only)
Series: ESM-20 RadMan (BN 2250/xx)
Manufacturer: Narda Safety Test Solutions GmbH, Pfullingen, Germany

Narda ESM-20 RadMan / ESM-30 RadMan XT Operating Manual (English) — covers 2250/xx and 2251/xx series: Download PDF

Narda RadMan / RadMan XT RF Personal Monitors product brochure with specifications and model selection guide: Download PDF

Narda RadMan Personal Radiation Monitor datasheet including model selection guide and ICNIRP frequency ranges: Download PDF

Narda ESM-20 RadMan and ESM-10 RadMan Mobile combined Operating Manual (Edition 12/16.05, covers 2250/xx, 2251/xx, 2252/xx): Download PDF

Shipping & Returns Policy

Shipping Policy

• Processing Time: Orders are typically processed and dispatched within 1 business day.
• Shipping Methods: We offer Expedited Shipping to all destinations using UPS/DHL/Fedex/Royal Mail and other reputable carriers.
• Shipping Times: Mainland UK: 1-2 Business Days / Mainland Europe and USA: 2-3 Business Days / Rest of the World 5-7 Business Days.
• Shipping Costs: These are calculated at checkout based on the shipping method, destination and package dimensions.
• CUSTOMS AND TAXES: It is YOUR responsibility to liaise with customs in your country and ensure your package is cleared and any taxes are paid.
• Shipping Destinations: We ship worldwide.
• Tracking: Once your order is shipped, we will provide you with a tracking number via email.
• Insurance: All shipments are insured. In case of damage, please contact us via email within 48 hours of receiving the product with photographic evidence, please also ensure a report is logged with the delivery driver.

Returns Policy

• Return Period: In the event of an item being received which is not as specified, you can return your purchase within 14 days of delivery.
• Condition of Items: Items must be returned unused and in their original packaging.
• Return Method: All returns must be notified in writing to hello@ttinstruments.com, and the email should include the order number, date and reason for return within 14 days of delivery.
• Restocking Fees: A restocking fee of up-to 20% is applicable for items returned for any reason other than not as specified.
• Refund Method: Refunds are processed to the original method of payment within 5 business days of receiving the return.
• Exchanges: We do not offer exchanges. It will either be a replacement or a refund.
• Return Shipping Costs: Return shipping costs will be borne by the customer unless the item is not as specified, in which case we will arrange a prepaid return label.