SMS Scales for

Langstroth-Ruth

Width 350mm
Length 450mm
Height 90mm

Pan dimensions:

Width 412mm
Length 504mm
SMS Scales for

Dadant-Blatt 10

Width 350mm
Length 505mm
Height 90mm

Pan dimensions:

Width 412mm
Length 555mm
SMS Scales for

Dadant-Blatt 12

Width 450mm
Length 450mm
Height 90mm

Pan dimensions:

Width 504mm
Length 504mm
SMS Scales for

Albert-Žnideršič

Width 350mm
Length 640mm
Height 90mm

Pan dimensions:

Width 420mm
Length 625mm
SMS Scales for

Rodna Voja

Width 350mm
Length 350mm
Height 90mm

Pan dimensions:

Width 414mm
Length 414mm

Specification of SMS Scales

- GSM/GPRS module; Quad-band 850/900/1800/1900MHz; SIM cards: 1.8V/3.0V.
Class 4 (2W) at GSM 850 and EGSM 900; Class 1 (1W) at DCS 1800 and PCS 1900.
 
- BRUTO measurement:
up to 120kg (+-25g);
up to 240kg (+-50g);
up to 360kg (+-100g)
120kg load cell is standard for SMS Scales. By customer request there is the possibility of installing stronger load cell. Price is the same.
 
- Power supply: DC 12V-30V.
 
- Power autonomy for 12V / 7Ah battery:
in MODE1 45 days
in MODE2 120 days
 
- Weighing: by free call, SMS, bluetooth or Internet.
 
- Working temperature: -40C up to +85C

Frame

The frame of SMS Scales consists of 2 metal bars (square pipes 20x30mm) H shaped and in the middle there is a measurement cell. The lower bar contains holders for a box with electronics and a battery, and on the lower side fuses are screwed for leveling the scale. This type of construction has proved to be most efficient for equal weight management which has an effect on the precision of measurement. At the ends of the construction, plastic seals are placed to prevent moisture from getting inside.

Additional option is a pan which covers the constructions of bee SMS Scales. The pan is made of thin tin and has a small door at the back which enables easier access to electronics and the battery. On the lower side of the pan there are specially designed sockets which fit the construction of the scale and the rubber in the socket prevents it from sliding. The pan also has a protective role by shielding the other parts from the elements and dust.

Electronics

Electronics consist of a measurement cell and a printed circuit board. The measurement cell is fixated in the middle of the construction and is cable connected with the printed circuit board.

The standard measurement cell which is delivered with the SMS Scales can weigh up to 120kg, which most beekeepers find sufficient. The weight tolerance of this cell is +/- 25 grams.There is also a possibility of installing a 200 or 300kg cell with a tolerance up to 100 grams.

The circuit board is protected with a plastic waterproof box on which impermeable sockets for cables and a measurement cell, hand display and charging are placed. The circuit board is connected with a GSM module in which a SIM card is of either home or foreign operator placed.

GSM module can either be mounted or dismounted from the circuit board depending on the needs of the buyer. The basic model of the digital scale (without SMS function) does not contain a GSM module. Connectors are also placed on the board, on which other sensors can be added such as a movement detector, heat measurement, air humidity and the amount of rainfall...

The main circuit board is our own idea which was devised by the SMS Scales Team

Autonomy

Since the device is battery operated, the software is programmed so that when the device is not being used hardware goes into hibernate mode in which the consumption of energy is reduced and that way it secures multiply longer autonomy.

The autonomy of the SMS Scales depends on the quality of the battery charge, external temperature and the intensity of usage. With quality gel battery of small dimensions (capacity 7Ah) which you can purchase along with SMS Scales, temperatures over 5C and the normal pace of using you can achieve the autonomy of around 25 days. The advantage of these small batteries is that they fit beneath the pan of the scales and there it is protected from the atmospheric effects and is harder to spot for potential thieves.

Beekeepers can purchase the SMS Scales without a battery and use any car battery for charging. In that case the autonomy is significantly longer and the SMS Scales can work for up to 6 months. Even batteries that are way too depleted for an automobile can be used to power the SMS Scales for months.