ORTEC (AMETEK)
ORTEC
FoodGuard-2
HPGe workstation for quantitative determination of radionuclides in food
- Detector type
- High-resolution HPGe detector
- Relative efficiency
- 20–60%; detector and cooling chosen when ordering
9 referenced values
Bild: ORTEC
FoodGuard-1
NaI-based system for rapid food screening
Ready-to-use system for rapid screening of solid and liquid foodstuffs for radioactive contamination, aimed at food producers, traders and import and export agencies. A 3 × 3 in NaI detector in a lead shield and a USB-connected digiBASE measure samples in 1-litre Marinelli beakers; the software checks the results against allowable limits, raises alarms and prints the report. Supplied pre-calibrated, battery operated and transportable on a cart.
- Detector type
- NaI(Tl) 3 × 3 in (ORTEC 905-4) with digiBASE: 14-pin PMT base with integrated bias supply, preamplifier and digital MCA1
- Typical energy resolution, Cs-137
- 8% at 662 keV1
Download product sheet (PDF)All values with references – for tender documents
Specifications checked against the manufacturer’s documents on 2026-10-17
Overview
Key features
- Results as percentage of maximum permitted concentration (MPC) with audible alarms
- Digitally stabilised against temperature variations
- Supplied pre-calibrated with sample containers and a check source
Specifications
The number after each value refers to the source listed below. Values are as published by the manufacturer; the exact configuration is always confirmed in our quotation.
Detector
| Detector type | NaI(Tl) 3 × 3 in (ORTEC 905-4) with digiBASE: 14-pin PMT base with integrated bias supply, preamplifier and digital MCA1 |
|---|---|
| Monitored nuclides | ¹³¹I, ¹⁰³Ru, ¹³⁴Cs and ¹³⁷Cs; total caesium (¹³⁴Cs + ¹³⁷Cs) can be reported; naturally occurring ⁴⁰K is reported to monitor system performance1 |
| Sample geometry | 1-litre Marinelli beakers (GA-MA 133N-E with lid), six included1 |
Performance
| Typical energy resolution, Cs-137 | 8% at 662 keV1 |
|---|
Software & data
| Analysis method | “Interference ROI matrix”, approved by the US FDA for monitoring foodstuffs; results as percentage of maximum permitted concentration (MPC) with audible alarm at a user-set limit1 |
|---|
Connectivity & interface
| Communication | USB 2.0 (12 Mbps); the digiBASE is powered from the USB cable1 |
|---|
Environment & ratings
| Listed operating system | Windows XP Professional SP3 or Windows 71 |
|---|
Ordering & accessories
| Included software | FoodGuard-1 v2.0 (FG-1-BW) in English, Russian, Chinese and Japanese; MAESTRO for spectrum display and calibration1 |
|---|---|
| Accessories | FGCART transport cart (24 × 24 in base, 36 in high, locking wheels); additional Marinelli beakers (FG-1-MARINELLI-CASE, 33 pcs)1 |
| Models | FOODGUARD-1 (base system), FOODGUARD-1-PC (with laptop and printer), FOODGUARD-1-CART (with cart), FOODGUARD-1-PC-CART (with computer, printer and cart)1 |
General
| Lead shielding | Bench-top low-background lead shield, 30 mm (G5-FOODGUARD-1), accommodates a 1-litre Marinelli beaker1 |
|---|---|
| Calibration | Supplied pre-calibrated for gain and efficiency; gain is stabilised on the ⁴⁰K peak from a small KCl sample inside the shield; a check source of approx. 2 kg KCl is included1 |
The data comes from the manufacturer’s published documents. Manufacturers may change specifications; the current configuration and performance are confirmed in the quotation.
Documents
Sources
The number after each value refers to the source listed below. Values are as published by the manufacturer; the exact configuration is always confirmed in our quotation.
- 1
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digiBASE
MCA and PMT base for nai(tl)
- Detector type
- NaI(Tl) scintillation detectors
- Spectrum channels
- 1,024
- Weight
- 280 g, digiBASE only
12 referenced values
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ORTEC 905 Series
NaI(Tl) scintillation detectors, 1 × 1 to 4 × 4 in
- Detector type
- NaI(Tl) scintillator with photomultiplier tube
- Typical energy resolution, Cs-137
- About 7% for a 3 in diameter by 3 in long crystal, slightly worse for larger sizes (manufacturer’s general figure for NaI(Tl))
5 referenced values
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PINS3-CW-G2
Chemical identification with a neutron generator – no ²⁵²Cf or liquid nitrogen
- Relative efficiency
- >50% typical (ANSI/IEEE 325-1996)
- Energy resolution at 122 keV
- <1600 eV FWHM (warranted at optimum settings and depending on detector type)
- Energy resolution at 1.33 MeV
- ≤2.5 keV FWHM at 1,332 keV (warranted at optimum settings and depending on detector type)
14 referenced values
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Oscar ÅgerstamFounder & CEO