Kern PLS 20000-1F precision balance 20,000 g / 0.1 g
€639.00
% Manufacturer's RRP: €710.00 10% below manufacturer's RRP
- Weighing range 20,000 g, readability 0.1 g
- Reproducibility 0.1 g, linearity ± 0.4 g, stabilisation time 3 s
- USP minimum sample weight 200 g, weighing pan 200 x 175 mm, strain gauge weighing system
- Without draught shield, overall height 120 mm
- Graphic LCD, formulation database for 99 formulations, CAL adjustment programme with external weight
- RS-232 as standard, eyelet for below-balance weighing and working protective cover in the scope of delivery
Product information "Kern PLS 20000-1F precision balance 20,000 g / 0.1 g"
The Kern PLS is a series of precision balances with graphic display and formulation database, adjusted with an external weight. Seven models cover weighing ranges from 420 g to 20,000 g. Three models have a readability of 0.001 g (1 mg): the PLS 420-3F, 720-3A and 1200-3A. Three models have a readability of 0.01 g: the PLS 4200-2F, 6200-2A and 8000-2A. The PLS 20000-1F weighs up to 20,000 g at 0.1 g. Kern describes the series as precision balances with convenient graphic display and large weighing range.
Model selection by weighing range
The three models with ring-shaped draught shield weigh up to 1,200 g and read to the milligram. The three models with 0.01 g range between 4,200 g and 8,200 g, including the PLS 8000-2A with a weighing range of 8,200 g and a stabilisation time of 4 s. The PLS 20000-1F covers the range up to 20,000 g, has a rectangular weighing pan of 200 x 175 mm and a USP minimum sample weight of 200 g. Four models (PLS 720-3A, 1200-3A, 6200-2A, 8000-2A) use force compensation, whilst three (PLS 420-3F, 4200-2F, 20000-1F) use strain gauges. The force-compensated models weigh approximately 4.8 kg, whilst the others weigh approximately 3.2 kg.
Adjustment with an external weight
The PLS is adjusted using an external weight. The CAL adjustment programme guides through the procedure; suitable test weights are available at extra cost. The PLJ series, on the other hand, has an internal automatic adjustment function. This does not replace a calibration certificate, which is available separately (see below).
Formulations, counting and documentation
Up to 99 formulations, each with up to 20 ingredients including their names and target values, can be stored in the formulation database. The graphic display shows plain text and guides the user through the input process. A high-stability mode and further filter settings serve as a dosing aid. The balance counts pieces (reference piece counts 10, 25, 50, 100 or free entry), determines percentages and density and forms an average under unstable weighing conditions. When weighing within a tolerance range, an audible and a visual signal provide feedback. GLP/ISO logging records value, date and time and is output via the standard RS-232 interface.
Draught shield and assembly
The PLS 420-3F, 720-3A and 1200-3A have a ring-shaped glass draught shield; the weighing chamber measures Ø 150 mm by 60 mm in height, and the balance is 160 mm high. The remaining four models are 120 mm high and, according to Kern, do not have a draught shield. The plastic housing measures 210 x 340 x 120 mm (W x D x H). On the PLS 420-3F, 720-3A and 1200-3A, the stainless steel weighing pan has a diameter of 110 mm; on the PLS 4200-2F, 6200-2A and 8000-2A, it is 160 mm. For all seven models, an eyelet for below-balance weighing is included in the scope of delivery.
Typical applications
- Laboratory applications: weighing of samples, chemicals and standards
- Research and development: formulations from the database with target values
- Jewellery and precious metals testing: density determination, weighing in grams and carats
- Environmental analysis: weighing samples with GLP/ISO protocol
- Electronics industry: counting and weighing of components and containers
The PLS 420-3F, 720-3A and 1200-3A are intended for small weighing in up to 1,200 g at 1 mg. Anyone weighing larger items up to 20,000 g at 0.1 g takes the PLS 20000-1F.
Models at a glance
| Model | Weighing range (Max) | Readability (d) | Reproducibility | Linearity | Stabilisation time | Weighing system | Weighing pan | USP minimum sample weight (k = 2, U = 0.1 %) | Minimum unit weight when piece counting (laboratory / normal) | Net weight approx. |
|---|---|---|---|---|---|---|---|---|---|---|
| PLS 420-3F | 420 g | 0.001 g | 0.001 g | ± 0.004 g | 3 s | Strain gauge | Ø 110 mm | 2 g | 5 mg / 50 mg | 3.2 kg |
| PLS 720-3A | 720 g | 0.001 g | 0.001 g | ± 0.002 g | 2 s | Force compensation | Ø 110 mm | 2 g | 5 mg / 50 mg | 4.8 kg |
| PLS 1200-3A | 1,200 g | 0.001 g | 0.001 g | ± 0.003 g | 2 s | Force compensation | Ø 110 mm | 2 g | 5 mg / 50 mg | 4.8 kg |
| PLS 4200-2F | 4,200 g | 0.01 g | 0.01 g | ± 0.04 g | 3 s | Strain gauge | Ø 160 mm | 20 g | 50 mg / 500 mg | 3.2 kg |
| PLS 6200-2A | 6,200 g | 0.01 g | 0.01 g | ± 0.03 g | 2 s | Force compensation | Ø 160 mm | 20 g | 50 mg / 500 mg | 4.8 kg |
| PLS 8000-2A | 8,200 g | 0.01 g | 0.01 g | ± 0.04 g | 4 s | Force compensation | Ø 160 mm | 20 g | 10 mg / 100 mg | 4.8 kg |
| PLS 20000-1F | 20,000 g | 0.1 g | 0.1 g | ± 0.4 g | 3 s | Strain gauge | 200 x 175 mm | 200 g | 500 mg / 5 g | 3.2 kg |
Technical details
These values apply to all models. Deviating values are given in the model table.
| Weighing plate | Stainless steel |
| Housing | Plastic, 210 x 340 x 120 mm (W x D x H) |
| Display | Graphic LCD, digit height 15 mm |
| Units | including g, ct, lb, oz; mg for PLS 420-3F, 720-3A and 1200-3A |
| Formulation database | 99 formulations with up to 20 ingredients each |
| Reference piece counts when counting | 10, 25, 50, 100 or free entry |
| Adjustment | external, CAL adjustment programme, test weights at extra cost |
| Interface | RS-232 as standard |
| Power supply | Plug-in mains adaptor, 100 V to 240 V AC, 50 / 60 Hz, with country adaptors for EU, AUS, UK, US and CH |
| Dimensions, fully assembled (W x D x H) | 210 x 340 x 160 mm (PLS 420-3F, 720-3A, 1200-3A); 210 x 340 x 120 mm (other models) |
| Ambient temperature | 15 °C to 35 °C |
| Humidity | up to 80 % |
| Storage temperature | -10 °C to +40 °C |
| DAkkS calibration certificate | can be ordered separately, item no. 963-103, 963-127, 963-104 or 963-128 depending on the model |
| Warranty (manufacturer) | 36 months according to Kern, excluding wear parts |
Scope of delivery
- Kern PLS precision balance with stainless steel weighing pan
- Ring-shaped glass draught shield (PLS 420-3F, 720-3A and 1200-3A only)
- Working protective cover
- Eyelet for below-balance weighing
- Plug-in mains adaptor with country adaptors for EU, AUS, UK, US and CH
Calibration
A DAkkS calibration certificate can be ordered separately: item no. 963-103 for PLS 720-3A and PLS 1200-3A, item no. 963-127 for PLS 420-3F and PLS 4200-2F, item no. 963-104 for PLS 6200-2A and PLS 8000-2A, item no. 963-128 for PLS 20000-1F. The confirmation of manufacturer specification (969-517) is only available in conjunction with the DAkkS calibration certificate.
Warranty
According to Kern & Sohn, these devices come with a 3-year warranty. Kern grants 3 years on products with a list price of €500 or more and 2 years on products below that and on components; wear parts such as batteries and rechargeable batteries are excluded. Warranty repairs are carried out by Kern or by a Kern dealer.
Downloads
Regulatory information
As electrical devices, the balances fall under the ElektroG. The manufacturer Kern & Sohn GmbH is registered under the WEEE registration number DE 80821200. How to return old appliances is described on the page Environment and disposal.
Individual requirements and procurement service
Working protective covers (PLJ-A01S05, 5 pieces), the density determination kit (ALT-A02, not for PLS 1200-3A and PLS 20000-1F), anti-vibration table (YPS-03), anti-vibration plates (YPS-04, YPS-05), thermal printers (YKC-01, YKH-01), dot-matrix printer (YKG-01), needle printer (YKT-01), RS232 Bluetooth adapter (YKI-02), RS232 Ethernet converters (YKI-10, YKI-11), RS232 WLAN converter (YKI-12) and the RS-232 interface cable (572-926) are also available. Kern also lists test weights and Safety Sets: 316-11 (1 kg, OIML class E2) and 315-111-206 (50 g F1 and 1,000 g E2) for PLS 1200-3A, 316-13 (5 kg, class E2) for PLS 6200-2A, 315-208-205 (20 g and 200 g, F1) for PLS 420-3F and 315-109-206 (50 g F1 and 500 g E2) for PLS 720-3A. Enquiries are handled via our procurement service.
| Weighing range (Max): | 20 kg |
|---|---|
| Readability (d): | 0.1 g |
| Verifiable: | no |
| Design: | PLS 20000-1F · 20.000 g |
| Power supply: | Mains operation |